There are two golf balls sitting on the moon.
721
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
If two pieces of metal touch in space, they become permanently stuck together.
808
Venus is the only planet that rotates clockwise.
310
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124